. >> stahl: with the 150th anniversary of the civil war, we're going through another abraham lincoln revival. not that interest in him ever really fades-- there've been close to 16,000 books written about him, and now, steven spielberg's movie, "lincoln," which has been nominated for 12 academy awards. the film is filled with things about our 16th president that we, who aren't lincoln scholars, didn't know. it's daniel day-lewis, whose been nominated for an oscar for best actor, who brings the great man to life. >> daniel day-lewis (as "lincoln"): i can't listen to this anymore. i can't accomplish a goddamn thing of any human meaning or worth until we cure ourselves of slavery and end this pestilential war. >> day-lewis: i never, ever felt that depth of love for another human being that i never met. and that's i think probably the effect that lincoln has on most people that take the time to discover him. >> stahl: after agreeing to take the part, daniel day-lewis spent a year reading and doing research into abraham lincoln the man. >> day-lewis: he does feel as if he's carved in ston